There are a few differences between something like iFunbox or iExplorer vs. WinSCP or Cyberduck. I use Cyberduck when I have wifi and iExplorer when I don't. But of course iExplorer doesn't do some of the things I want that Cyberduck can do. Well I guess what I'm saying is there are differences and it isn't fair to say one is better than the other as they both tend to serve identical purposes, but one has one feature where the other has another which can limit a user.

OK guys I have a straight forward answer to the question asked.I found this way/workaround to copy songs to my iphone4s after I formatted my pc and did not want to re-sync my phone.

1)Install Mewseek from cydia
2)Open I fun box and go to raw filesystem/var/mobile/media/downloads.
3)Place all your songs in this folder.
4)Open Mewseek and go to Downloads tab at bottom.
5)Now simply select the songs and then press 'add to library' located at top right corner of the screen.

Ps:If you get exclamation mark i.e. (!) next to a song in Mewseek then simply edit tag using edit tag option.